Check-If-Email-Exists : A Tool To Verify Email Addresses Without Sending Emails

This is open-source, but I also offer a SaaS solution that has check-if-email-exists packaged in a nice friendly web interface.

If you are interested, find out more at Reacher. If you have any questions, you can contact me at amaury@reacher.email.

Get Started

3 non-SaaS ways to get started with check-if-email-exists.

1. HTTP Backend Using Docker (Popular Method ) [Full docs]

This option allows you to run a HTTP backend using Docker, on a cloud instance or your own server. Please note that outbound port 25 must be open.

docker run -p 8080:8080 reacherhq/backend:latest

Then send a POST http://localhost:8080/v0/check_email request with the following body:

{
    "to_email": "someone@gmail.com",
    "from_email": "my@my-server.com", // (optional) email to use in the `FROM` SMTP command, defaults to "user@example.org"
    "hello_name": "my-server.com",    // (optional) name to use in the `EHLO` SMTP command, defaults to "localhost"
    "proxy": {                        // (optional) SOCK5 proxy to run the verification through, default is empty
        "host": "my-proxy.io",
        "port": 1080,
        "username": "me",             // (optional) Proxy username
        "password": "pass"            // (optional) Proxy password
    },
    "smtp_port": 587                  // (optional) SMTP port to do the email verification, defaults to 25
}

2. Download The CLI [Full docs]

Head to the releases page and download the binary for your platform.

> $ check_if_email_exists --help
check_if_email_exists 0.9.1
Check if an email address exists without sending an email.

USAGE:
    check_if_email_exists [FLAGS] [OPTIONS] [TO_EMAIL]

For more information click here.